Cognitive Science, Modularity, Neuroscience, and Language Acquisition

A comprehensive vocabulary review set consisting of exactly 50 terms and definitions based on lecture materials covering cognitive modularity, the mind-body problem, functional neuroimaging mechanics and critiques, computational equivalence, and the cognitive science of language acquisition.

Informational Encapsulation

The modularity principle stating that processing internal to a module cannot access external information, such as thoughts, memories, or beliefs, behaving like mental reflexes.

Lack of Access to Interlevels

A feature of cognitive modules where external processes cannot access the intermediate processing states inside the module, observing only the final output.

Instinct Blindness

The subjective illusion that complex computational processes are effortless and simple, caused by the mind's lack of access to intermediate cognitive operations.

The Uncanny Valley

The psychological phenomenon where artificial attempts to replicate human characteristics appear unsettling or weird because subtle cues violate modular expectations.

Mandatory Processing

The involuntary nature of cognitive modules where processing occurs automatically and cannot be deliberately turned off (for example, having to physically cover one's ears to avoid hearing words).

Fast Processing

A signature property of modular recognition systems characterized by rapid execution with no conscious delay in recognition.

Frame Problem

The computational dilemma of how an information processing system determines what information is relevant or irrelevant to a specific context.

Characteristic Breakdown

The distinct, localized failure pattern of a damaged modular system, such as aphasia where a patient can understand speech but cannot produce it, or produce fluent word salads without comprehension.

Neural Modularity

The architectural organization of the brain into specialized computational units, estimated at approximately $180$ distinct neural modules per hemisphere.

Domain-Specificity

The property of a cognitive or neural mechanism being dedicated to a single specialized task, which operates independently of informational encapsulation.

Pareidolia

The cognitive phenomenon of perceiving faces in ambiguous or inanimate visual stimuli where none exist, illustrating informational encapsulation.

Fusiform Face Area (FFA)

A specialized region of the brain dedicated to human face recognition, demonstrating high specificity and heritability.

Swiss Army Knife Reference

An analogy illustrating evolutionary modularity: just as a liver would fail if repurposed to pump blood, specialized mental tools are adapted for distinct biological functions.

Mind/Body Problem

The core mystery concerning the physical nature of the body, its relationship to the subjective mind, and the origin of consciousness.

Dualism

The philosophical doctrine stating that the essence of the mind is a nonphysical substance or property whose identity is independent of the physical body to which it is temporarily attached.

"Ghost in the Machine"

A conceptual problem within substance dualism addressing how an immaterial mind could physically inhabit or manipulate a mechanical biological body.

New Mysterianism

The philosophical position asserting that the hard problem of consciousness is inherently unsolvable by human cognitive architecture.

Reproductive Math (Step 1 of Evolution)

The initial condition of evolution wherein organisms produce multiple offspring over successive generations.

"Crunch Time" (Step 2 of Evolution)

The inevitable environmental pressure wherein an expanding population must compete for finite ecological resources.

Variation (Step 3 of Evolution)

The presence of significant trait differences among competing organisms, determining which individuals survive and reproduce more successfully.

Principle of Inheritance (Step 4 of Evolution)

The biological mechanism ensuring that adaptive, survival-enhancing traits are transmitted genetically across generations to populate the species.

Proton Spin and Angular Momentum

The quantum physical property of hydrogen atomic nuclei that creates an orientation and magnetic dipole used in magnetic resonance imaging.

Precession

The wobbling or rotational movement of an atomic proton's spin axis around an external magnetic field, analogous to the motion of a spinning top or gyroscope.

Radio Frequency (RF) Pulse

An electromagnetic pulse applied at a resonant frequency that knocks aligned protons away from the main magnetic field axis, generating detectable signals upon realignment.

Blood Oxygen Level Dependent (BOLD) Signal

An indirect measure of neural activation used in fMRI that tracks changes in blood oxygenation rather than direct electrical neural firing.

Paramagnetic Hemoglobin

The state of deoxygenated blood where unshielded iron makes it highly susceptible to magnetic fields, causing faster proton dephasing.

Diamagnetic Hemoglobin

The state of oxygenated blood where oxygen shields iron atoms, decreasing magnetic susceptibility and lengthening the duration of the detected MR signal.

Spatial Resolution in fMRI

The physical measurement precision of functional neuroimaging, which can resolve brain structures down to approximately $1\,\text{mm}^3$.

Temporal Resolution in fMRI

A key limitation of functional neuroimaging characterized by a multi-second delay, caused by the inherently slow circulatory response of blood flow (hemodynamics).

Subtraction Method

An experimental imaging design where baseline brain activation during a control task is subtracted from target task activation to isolate localized cognitive functions.

Personal vs. Impersonal Moral Dilemmas

An fMRI paradigm by Greene et al. demonstrating that personal moral actions (e.g., pushing someone off a bridge) selectively activate emotional regions compared to impersonal actions (e.g., flipping a trolley switch).

Reverse Correlation

A hypothesis-free neuroimaging technique using continuous stimuli (e.g., the film The Good, the Bad and the Ugly) or visual noise to discover specialized cortical areas by tracking shared activation across subjects.

Homuncular Explanation

A theoretical flaw where neuroimaging merely localizes a cognitive process to a specific anatomical region rather than explaining the algorithm performing it.

Computational Equivalence

The concept that two distinct physical or algorithmic systems executing different step-by-step procedures can compute the exact same mathematical function and input-output mapping.

Component Reuse

An engineering and computational principle where pre-existing modular sub-routines are repurposed within larger, more complex programs to achieve hierarchical abstraction.

The Microprocessor Study

An investigation by Jonas and Kording applying standard neuroscience methods to a classical computer chip running arcade games, revealing that implementation-level descriptions fail to uncover high-level computational software logic.

"Donkey Kong Transistor"

An absurd conclusion highlighted in the microprocessor study illustrating the error of deducing functional specialization merely because disabling a single component impairs a specific behavior.

Wolfpack Effect

An illusion where moving dart shapes consistently orienting toward a target activate the Fusiform Face Area, demonstrating that the FFA responds to perceived social animacy rather than strictly literal human faces.

Monkey LIP Region Experiment

A neuroscientific study proving correlation does not equal causation: LIP neurons correlated with perceptual decisions, yet chemically inactivating them caused no deficit in behavioral performance.

Lack of Selective Association

The empirical finding from large-scale meta-analyses that cognitive faculties like language produce scattered activation peaks across the entire cortex rather than a single dedicated region.

Seductive Allure of Neuroscience

A cognitive bias demonstrated by Yale researchers where logically flawed explanations are judged as scientifically satisfying when paired with irrelevant neuroscience jargon or brain scans.

Mind-Reading vs. Understanding (Nishimoto et al.)

A critique showing that reconstructing video clips from fMRI signals using a $5{,}000$-hour YouTube database achieves brute-force statistical prediction without explaining how the brain internally encodes visual representations.

Statistical Learning

A domain-general learning capacity where infants compute patterns, distributional regularities, and syllable transitions in sensory input to acquire language.

Transitional Probability

The conditional probability of sound $Y$ given preceding sound $X$ (for example, $da \rightarrow ku = 1.0$ versus $ku \rightarrow to = 0.3$), used by infants to identify word boundaries in continuous speech.

Critical Period

A biologically constrained developmental window (between ages $2$ and $12$ in humans) during which exposure to linguistic input is required to acquire native grammatical fluency.

Home Sign

A spontaneous, gestural communication system invented by deaf children raised without sign language models, displaying consistent word order and grammatical categories.

Nicaraguan Sign Language (1977–2004)

A language developed organically by successive cohorts of deaf students in Managua, which evolved from rudimentary gestures into a complex, fully articulated linguistic grammar.

Separation of Manner and Path

A grammatical hallmark observed in Nicaraguan Sign Language where children broke continuous physical movements into separate, discrete signs for how an action occurred versus its directional trajectory.

Esperanto

An artificially engineered global auxiliary language that is simple for adults to learn through explicit rules, but fails to be naturally acquired by children as a native mother tongue.

Poverty of the Stimulus

The learnability argument that ambient linguistic input heard by children lacks sufficient negative feedback and structured completeness to account for the rich, uniform mental grammar they construct.